<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-transcoder</artifactId>
    <version>1.17</version>
</dependency>
<dependency>
    <groupId>org.apache.xmlgraphics</groupId>
    <artifactId>batik-codec</artifactId>
    <version>1.17</version>
</dependency>

import org.apache.batik.transcoder.Transcoder;
import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;

public class SvgToPngConverter {

    /**
     * 將網(wǎng)絡(luò)上的 SVG 轉(zhuǎn)換為指定寬高的 PNG
     *
     * @param svgUrl      SVG 文件的 URL
     * @param pngFilePath 輸出的 PNG 文件路徑
     * @param width       目標(biāo)寬度（像素）
     * @param height      目標(biāo)高度（像素）
     * @throws IOException       IO 異常
     * @throws TranscoderException 轉(zhuǎn)換異常
     */
    public static void convertSvgToPng(String svgUrl, String pngFilePath, int width, int height)
            throws IOException, TranscoderException {

        // 1. 打開(kāi)網(wǎng)絡(luò)連接獲取 SVG 輸入流
        URL url = new URL(svgUrl);
        URLConnection connection = url.openConnection();
        try (InputStream inputStream = connection.getInputStream();
             OutputStream outputStream = new FileOutputStream(pngFilePath)) {

            // 2. 創(chuàng)建 PNG 轉(zhuǎn)換器
            Transcoder transcoder = new PNGTranscoder();

            // 3. 設(shè)置目標(biāo)寬高（關(guān)鍵?。?
            transcoder.addTranscodingHint(PNGTranscoder.KEY_WIDTH, (float) width);
            transcoder.addTranscodingHint(PNGTranscoder.KEY_HEIGHT, (float) height);

            // 4. 設(shè)置輸入和輸出
            TranscoderInput input = new TranscoderInput(inputStream);
            TranscoderOutput output = new TranscoderOutput(outputStream);

            // 5. 執(zhí)行轉(zhuǎn)換
            transcoder.transcode(input, output);
        }
        // try-with-resources 會(huì)自動(dòng)關(guān)閉流
    }

    // 測(cè)試調(diào)用示例
    public static void main(String[] args) {
        try {
            String svgUrl = "https://example.com/favicons/favicon.svg";
            String pngPath = "favicon_64.png";

            convertSvgToPng(svgUrl, pngPath, 64, 64);
            System.out.println("SVG 轉(zhuǎn)換為 PNG 成功！輸出文件：" + pngPath);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}